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Blood volume determination and sensor calibration

  • US 7,734,322 B2
  • Filed: 02/02/2004
  • Issued: 06/08/2010
  • Est. Priority Date: 10/14/1997
  • Status: Active Grant
First Claim
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1. A method for calibrating a blood property sensor, the method comprising:

  • (a) connecting an arterial tubing portion of a dialysis system to withdraw blood from a patient and connecting a venous tubing portion of the dialysis system to deliver blood to the patient;

    (b) passing diluted blood having a dilution indicator past the blood property sensor in the venous tubing portion;

    (c) determining at least one property of the diluted blood passing the blood property sensor in the venous tubing portion; and

    (d) determining a calibration coefficient K of the blood property sensor based on the determined blood property of the diluted blood passing the blood property sensor in the venous tubing portion and the relationship

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